Wall clock



FIG. 1 is a top, front and left side perspective view of a wall clock showing our new design;

FIG. 2 is a front elevation view thereof,

FIG. 3 is a rear elevation view thereof,

FIG. 4 is a left side view thereof,

FIG. 5 is a right side view thereof,

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

CLAIM The ornamental design for a wall clock, as shown and described. 